Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * This program is free software; you can redistribute it and/or |
| 3 | * modify it under the terms of the GNU General Public License |
| 4 | * as published by the Free Software Foundation; either version |
| 5 | * 2 of the License, or (at your option) any later version. |
| 6 | * |
| 7 | * Original driver code supplied by Multi-Tech |
| 8 | * |
| 9 | * Changes |
| 10 | * 1/9/98 alan@redhat.com Merge to 2.0.x kernel tree |
| 11 | * Obtain and use official major/minors |
| 12 | * Loader switched to a misc device |
| 13 | * (fixed range check bug as a side effect) |
| 14 | * Printk clean up |
| 15 | * 9/12/98 alan@redhat.com Rough port to 2.1.x |
| 16 | * |
| 17 | * 10/6/99 sameer Merged the ISA and PCI drivers to |
| 18 | * a new unified driver. |
| 19 | * |
| 20 | * 3/9/99 sameer Added support for ISI4616 cards. |
| 21 | * |
| 22 | * 16/9/99 sameer We do not force RTS low anymore. |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 23 | * This is to prevent the firmware |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 24 | * from getting confused. |
| 25 | * |
| 26 | * 26/10/99 sameer Cosmetic changes:The driver now |
| 27 | * dumps the Port Count information |
| 28 | * along with I/O address and IRQ. |
| 29 | * |
| 30 | * 13/12/99 sameer Fixed the problem with IRQ sharing. |
| 31 | * |
| 32 | * 10/5/00 sameer Fixed isicom_shutdown_board() |
| 33 | * to not lower DTR on all the ports |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 34 | * when the last port on the card is |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 35 | * closed. |
| 36 | * |
| 37 | * 10/5/00 sameer Signal mask setup command added |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 38 | * to isicom_setup_port and |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 39 | * isicom_shutdown_port. |
| 40 | * |
| 41 | * 24/5/00 sameer The driver is now SMP aware. |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 42 | * |
| 43 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | * 27/11/00 Vinayak P Risbud Fixed the Driver Crash Problem |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 45 | * |
| 46 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 47 | * 03/01/01 anil .s Added support for resetting the |
| 48 | * internal modems on ISI cards. |
| 49 | * |
| 50 | * 08/02/01 anil .s Upgraded the driver for kernel |
| 51 | * 2.4.x |
| 52 | * |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 53 | * 11/04/01 Kevin Fixed firmware load problem with |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 54 | * ISIHP-4X card |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 55 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 56 | * 30/04/01 anil .s Fixed the remote login through |
| 57 | * ISI port problem. Now the link |
| 58 | * does not go down before password |
| 59 | * prompt. |
| 60 | * |
| 61 | * 03/05/01 anil .s Fixed the problem with IRQ sharing |
| 62 | * among ISI-PCI cards. |
| 63 | * |
| 64 | * 03/05/01 anil .s Added support to display the version |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 65 | * info during insmod as well as module |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 66 | * listing by lsmod. |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 67 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 68 | * 10/05/01 anil .s Done the modifications to the source |
| 69 | * file and Install script so that the |
| 70 | * same installation can be used for |
| 71 | * 2.2.x and 2.4.x kernel. |
| 72 | * |
| 73 | * 06/06/01 anil .s Now we drop both dtr and rts during |
| 74 | * shutdown_port as well as raise them |
| 75 | * during isicom_config_port. |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 76 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 77 | * 09/06/01 acme@conectiva.com.br use capable, not suser, do |
| 78 | * restore_flags on failure in |
| 79 | * isicom_send_break, verify put_user |
| 80 | * result |
| 81 | * |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 82 | * 11/02/03 ranjeeth Added support for 230 Kbps and 460 Kbps |
| 83 | * Baud index extended to 21 |
| 84 | * |
| 85 | * 20/03/03 ranjeeth Made to work for Linux Advanced server. |
| 86 | * Taken care of license warning. |
| 87 | * |
| 88 | * 10/12/03 Ravindra Made to work for Fedora Core 1 of |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 89 | * Red Hat Distribution |
| 90 | * |
| 91 | * 06/01/05 Alan Cox Merged the ISI and base kernel strands |
| 92 | * into a single 2.6 driver |
| 93 | * |
| 94 | * *********************************************************** |
| 95 | * |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 96 | * To use this driver you also need the support package. You |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 97 | * can find this in RPM format on |
| 98 | * ftp://ftp.linux.org.uk/pub/linux/alan |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 99 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 100 | * You can find the original tools for this direct from Multitech |
| 101 | * ftp://ftp.multitech.com/ISI-Cards/ |
| 102 | * |
| 103 | * Having installed the cards the module options (/etc/modprobe.conf) |
| 104 | * |
| 105 | * options isicom io=card1,card2,card3,card4 irq=card1,card2,card3,card4 |
| 106 | * |
| 107 | * Omit those entries for boards you don't have installed. |
| 108 | * |
| 109 | * TODO |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 110 | * Merge testing |
| 111 | * 64-bit verification |
| 112 | */ |
| 113 | |
| 114 | #include <linux/module.h> |
Jiri Slaby | e65c1db | 2006-01-09 20:54:25 -0800 | [diff] [blame] | 115 | #include <linux/firmware.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 116 | #include <linux/kernel.h> |
| 117 | #include <linux/tty.h> |
Alan Cox | 33f0f88 | 2006-01-09 20:54:13 -0800 | [diff] [blame] | 118 | #include <linux/tty_flip.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 119 | #include <linux/termios.h> |
| 120 | #include <linux/fs.h> |
| 121 | #include <linux/sched.h> |
| 122 | #include <linux/serial.h> |
| 123 | #include <linux/mm.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 124 | #include <linux/interrupt.h> |
| 125 | #include <linux/timer.h> |
| 126 | #include <linux/delay.h> |
| 127 | #include <linux/ioport.h> |
| 128 | |
| 129 | #include <asm/uaccess.h> |
| 130 | #include <asm/io.h> |
| 131 | #include <asm/system.h> |
| 132 | |
| 133 | #include <linux/pci.h> |
| 134 | |
| 135 | #include <linux/isicom.h> |
| 136 | |
Jiri Slaby | aaa246e | 2006-01-09 20:54:23 -0800 | [diff] [blame] | 137 | #define InterruptTheCard(base) outw(0, (base) + 0xc) |
| 138 | #define ClearInterrupt(base) inw((base) + 0x0a) |
| 139 | |
| 140 | #ifdef DEBUG |
| 141 | #define pr_dbg(str...) printk(KERN_DEBUG "ISICOM: " str) |
| 142 | #define isicom_paranoia_check(a, b, c) __isicom_paranoia_check((a), (b), (c)) |
| 143 | #else |
| 144 | #define pr_dbg(str...) do { } while (0) |
| 145 | #define isicom_paranoia_check(a, b, c) 0 |
| 146 | #endif |
| 147 | |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 148 | static int isicom_probe(struct pci_dev *, const struct pci_device_id *); |
| 149 | static void __devexit isicom_remove(struct pci_dev *); |
| 150 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 151 | static struct pci_device_id isicom_pci_tbl[] = { |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 152 | { PCI_DEVICE(VENDOR_ID, 0x2028) }, |
| 153 | { PCI_DEVICE(VENDOR_ID, 0x2051) }, |
| 154 | { PCI_DEVICE(VENDOR_ID, 0x2052) }, |
| 155 | { PCI_DEVICE(VENDOR_ID, 0x2053) }, |
| 156 | { PCI_DEVICE(VENDOR_ID, 0x2054) }, |
| 157 | { PCI_DEVICE(VENDOR_ID, 0x2055) }, |
| 158 | { PCI_DEVICE(VENDOR_ID, 0x2056) }, |
| 159 | { PCI_DEVICE(VENDOR_ID, 0x2057) }, |
| 160 | { PCI_DEVICE(VENDOR_ID, 0x2058) }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 161 | { 0 } |
| 162 | }; |
| 163 | MODULE_DEVICE_TABLE(pci, isicom_pci_tbl); |
| 164 | |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 165 | static struct pci_driver isicom_driver = { |
| 166 | .name = "isicom", |
| 167 | .id_table = isicom_pci_tbl, |
| 168 | .probe = isicom_probe, |
| 169 | .remove = __devexit_p(isicom_remove) |
| 170 | }; |
| 171 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 172 | static int prev_card = 3; /* start servicing isi_card[0] */ |
| 173 | static struct tty_driver *isicom_normal; |
| 174 | |
| 175 | static struct timer_list tx; |
| 176 | static char re_schedule = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 177 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 178 | static void isicom_tx(unsigned long _data); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 179 | static void isicom_start(struct tty_struct *tty); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 180 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 181 | /* baud index mappings from linux defns to isi */ |
| 182 | |
| 183 | static signed char linuxb_to_isib[] = { |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 184 | -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 13, 15, 16, 17, 18, 19 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 185 | }; |
| 186 | |
| 187 | struct isi_board { |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 188 | unsigned long base; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 189 | unsigned char irq; |
| 190 | unsigned char port_count; |
| 191 | unsigned short status; |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 192 | unsigned short port_status; /* each bit for each port */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 193 | unsigned short shift_count; |
| 194 | struct isi_port * ports; |
| 195 | signed char count; |
| 196 | unsigned char isa; |
| 197 | spinlock_t card_lock; /* Card wide lock 11/5/00 -sameer */ |
| 198 | unsigned long flags; |
| 199 | }; |
| 200 | |
| 201 | struct isi_port { |
| 202 | unsigned short magic; |
| 203 | unsigned int flags; |
| 204 | int count; |
| 205 | int blocked_open; |
| 206 | int close_delay; |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 207 | u16 channel; |
| 208 | u16 status; |
| 209 | u16 closing_wait; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 210 | struct isi_board * card; |
| 211 | struct tty_struct * tty; |
| 212 | wait_queue_head_t close_wait; |
| 213 | wait_queue_head_t open_wait; |
| 214 | struct work_struct hangup_tq; |
| 215 | struct work_struct bh_tqueue; |
| 216 | unsigned char * xmit_buf; |
| 217 | int xmit_head; |
| 218 | int xmit_tail; |
| 219 | int xmit_cnt; |
| 220 | }; |
| 221 | |
| 222 | static struct isi_board isi_card[BOARD_COUNT]; |
| 223 | static struct isi_port isi_ports[PORT_COUNT]; |
| 224 | |
| 225 | /* |
| 226 | * Locking functions for card level locking. We need to own both |
| 227 | * the kernel lock for the card and have the card in a position that |
| 228 | * it wants to talk. |
| 229 | */ |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 230 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 231 | static int lock_card(struct isi_board *card) |
| 232 | { |
| 233 | char retries; |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 234 | unsigned long base = card->base; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 235 | |
| 236 | for (retries = 0; retries < 100; retries++) { |
| 237 | spin_lock_irqsave(&card->card_lock, card->flags); |
| 238 | if (inw(base + 0xe) & 0x1) { |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 239 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 240 | } else { |
| 241 | spin_unlock_irqrestore(&card->card_lock, card->flags); |
| 242 | udelay(1000); /* 1ms */ |
| 243 | } |
| 244 | } |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 245 | printk(KERN_WARNING "ISICOM: Failed to lock Card (0x%lx)\n", |
| 246 | card->base); |
| 247 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 248 | return 0; /* Failed to aquire the card! */ |
| 249 | } |
| 250 | |
| 251 | static int lock_card_at_interrupt(struct isi_board *card) |
| 252 | { |
| 253 | unsigned char retries; |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 254 | unsigned long base = card->base; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 255 | |
| 256 | for (retries = 0; retries < 200; retries++) { |
| 257 | spin_lock_irqsave(&card->card_lock, card->flags); |
| 258 | |
| 259 | if (inw(base + 0xe) & 0x1) |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 260 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 261 | else |
| 262 | spin_unlock_irqrestore(&card->card_lock, card->flags); |
| 263 | } |
| 264 | /* Failing in interrupt is an acceptable event */ |
| 265 | return 0; /* Failed to aquire the card! */ |
| 266 | } |
| 267 | |
| 268 | static void unlock_card(struct isi_board *card) |
| 269 | { |
| 270 | spin_unlock_irqrestore(&card->card_lock, card->flags); |
| 271 | } |
| 272 | |
| 273 | /* |
| 274 | * ISI Card specific ops ... |
| 275 | */ |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 276 | |
| 277 | static void raise_dtr(struct isi_port *port) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 278 | { |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 279 | struct isi_board *card = port->card; |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 280 | unsigned long base = card->base; |
| 281 | u16 channel = port->channel; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 282 | |
| 283 | if (!lock_card(card)) |
| 284 | return; |
| 285 | |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 286 | outw(0x8000 | (channel << card->shift_count) | 0x02, base); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 287 | outw(0x0504, base); |
| 288 | InterruptTheCard(base); |
| 289 | port->status |= ISI_DTR; |
| 290 | unlock_card(card); |
| 291 | } |
| 292 | |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 293 | static inline void drop_dtr(struct isi_port *port) |
| 294 | { |
| 295 | struct isi_board *card = port->card; |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 296 | unsigned long base = card->base; |
| 297 | u16 channel = port->channel; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 298 | |
| 299 | if (!lock_card(card)) |
| 300 | return; |
| 301 | |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 302 | outw(0x8000 | (channel << card->shift_count) | 0x02, base); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 303 | outw(0x0404, base); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 304 | InterruptTheCard(base); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 305 | port->status &= ~ISI_DTR; |
| 306 | unlock_card(card); |
| 307 | } |
| 308 | |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 309 | static inline void raise_rts(struct isi_port *port) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 310 | { |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 311 | struct isi_board *card = port->card; |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 312 | unsigned long base = card->base; |
| 313 | u16 channel = port->channel; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 314 | |
| 315 | if (!lock_card(card)) |
| 316 | return; |
| 317 | |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 318 | outw(0x8000 | (channel << card->shift_count) | 0x02, base); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 319 | outw(0x0a04, base); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 320 | InterruptTheCard(base); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 321 | port->status |= ISI_RTS; |
| 322 | unlock_card(card); |
| 323 | } |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 324 | static inline void drop_rts(struct isi_port *port) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 325 | { |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 326 | struct isi_board *card = port->card; |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 327 | unsigned long base = card->base; |
| 328 | u16 channel = port->channel; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 329 | |
| 330 | if (!lock_card(card)) |
| 331 | return; |
| 332 | |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 333 | outw(0x8000 | (channel << card->shift_count) | 0x02, base); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 334 | outw(0x0804, base); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 335 | InterruptTheCard(base); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 336 | port->status &= ~ISI_RTS; |
| 337 | unlock_card(card); |
| 338 | } |
| 339 | |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 340 | static inline void raise_dtr_rts(struct isi_port *port) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 341 | { |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 342 | struct isi_board *card = port->card; |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 343 | unsigned long base = card->base; |
| 344 | u16 channel = port->channel; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 345 | |
| 346 | if (!lock_card(card)) |
| 347 | return; |
| 348 | |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 349 | outw(0x8000 | (channel << card->shift_count) | 0x02, base); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 350 | outw(0x0f04, base); |
| 351 | InterruptTheCard(base); |
| 352 | port->status |= (ISI_DTR | ISI_RTS); |
| 353 | unlock_card(card); |
| 354 | } |
| 355 | |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 356 | static void drop_dtr_rts(struct isi_port *port) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 357 | { |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 358 | struct isi_board *card = port->card; |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 359 | unsigned long base = card->base; |
| 360 | u16 channel = port->channel; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 361 | |
| 362 | if (!lock_card(card)) |
| 363 | return; |
| 364 | |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 365 | outw(0x8000 | (channel << card->shift_count) | 0x02, base); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 366 | outw(0x0c04, base); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 367 | InterruptTheCard(base); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 368 | port->status &= ~(ISI_RTS | ISI_DTR); |
| 369 | unlock_card(card); |
| 370 | } |
| 371 | |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 372 | static inline void kill_queue(struct isi_port *port, short queue) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 373 | { |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 374 | struct isi_board *card = port->card; |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 375 | unsigned long base = card->base; |
| 376 | u16 channel = port->channel; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 377 | |
| 378 | if (!lock_card(card)) |
| 379 | return; |
| 380 | |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 381 | outw(0x8000 | (channel << card->shift_count) | 0x02, base); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 382 | outw((queue << 8) | 0x06, base); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 383 | InterruptTheCard(base); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 384 | unlock_card(card); |
| 385 | } |
| 386 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 387 | /* |
| 388 | * ISICOM Driver specific routines ... |
| 389 | * |
| 390 | */ |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 391 | |
Jiri Slaby | aaa246e | 2006-01-09 20:54:23 -0800 | [diff] [blame] | 392 | static inline int __isicom_paranoia_check(struct isi_port const *port, |
| 393 | char *name, const char *routine) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 394 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 395 | if (!port) { |
Jiri Slaby | aaa246e | 2006-01-09 20:54:23 -0800 | [diff] [blame] | 396 | printk(KERN_WARNING "ISICOM: Warning: bad isicom magic for " |
| 397 | "dev %s in %s.\n", name, routine); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 398 | return 1; |
| 399 | } |
| 400 | if (port->magic != ISICOM_MAGIC) { |
Jiri Slaby | aaa246e | 2006-01-09 20:54:23 -0800 | [diff] [blame] | 401 | printk(KERN_WARNING "ISICOM: Warning: NULL isicom port for " |
| 402 | "dev %s in %s.\n", name, routine); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 403 | return 1; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 404 | } |
Jiri Slaby | aaa246e | 2006-01-09 20:54:23 -0800 | [diff] [blame] | 405 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 406 | return 0; |
| 407 | } |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 408 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 409 | /* |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 410 | * Transmitter. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 411 | * |
| 412 | * We shovel data into the card buffers on a regular basis. The card |
| 413 | * will do the rest of the work for us. |
| 414 | */ |
| 415 | |
| 416 | static void isicom_tx(unsigned long _data) |
| 417 | { |
| 418 | short count = (BOARD_COUNT-1), card, base; |
| 419 | short txcount, wrd, residue, word_count, cnt; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 420 | struct isi_port *port; |
| 421 | struct tty_struct *tty; |
| 422 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 423 | /* find next active board */ |
| 424 | card = (prev_card + 1) & 0x0003; |
| 425 | while(count-- > 0) { |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 426 | if (isi_card[card].status & BOARD_ACTIVE) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 427 | break; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 428 | card = (card + 1) & 0x0003; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 429 | } |
| 430 | if (!(isi_card[card].status & BOARD_ACTIVE)) |
| 431 | goto sched_again; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 432 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 433 | prev_card = card; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 434 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 435 | count = isi_card[card].port_count; |
| 436 | port = isi_card[card].ports; |
| 437 | base = isi_card[card].base; |
| 438 | for (;count > 0;count--, port++) { |
| 439 | if (!lock_card_at_interrupt(&isi_card[card])) |
| 440 | continue; |
| 441 | /* port not active or tx disabled to force flow control */ |
| 442 | if (!(port->flags & ASYNC_INITIALIZED) || |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 443 | !(port->status & ISI_TXOK)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 444 | unlock_card(&isi_card[card]); |
| 445 | continue; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 446 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 447 | tty = port->tty; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 448 | |
| 449 | |
| 450 | if (tty == NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 451 | unlock_card(&isi_card[card]); |
| 452 | continue; |
| 453 | } |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 454 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 455 | txcount = min_t(short, TX_SIZE, port->xmit_cnt); |
| 456 | if (txcount <= 0 || tty->stopped || tty->hw_stopped) { |
| 457 | unlock_card(&isi_card[card]); |
| 458 | continue; |
| 459 | } |
| 460 | if (!(inw(base + 0x02) & (1 << port->channel))) { |
| 461 | unlock_card(&isi_card[card]); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 462 | continue; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 463 | } |
Jiri Slaby | aaa246e | 2006-01-09 20:54:23 -0800 | [diff] [blame] | 464 | pr_dbg("txing %d bytes, port%d.\n", txcount, |
| 465 | port->channel + 1); |
| 466 | outw((port->channel << isi_card[card].shift_count) | txcount, |
| 467 | base); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 468 | residue = NO; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 469 | wrd = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 470 | while (1) { |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 471 | cnt = min_t(int, txcount, (SERIAL_XMIT_SIZE |
| 472 | - port->xmit_tail)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 473 | if (residue == YES) { |
| 474 | residue = NO; |
| 475 | if (cnt > 0) { |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 476 | wrd |= (port->xmit_buf[port->xmit_tail] |
| 477 | << 8); |
| 478 | port->xmit_tail = (port->xmit_tail + 1) |
| 479 | & (SERIAL_XMIT_SIZE - 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 480 | port->xmit_cnt--; |
| 481 | txcount--; |
| 482 | cnt--; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 483 | outw(wrd, base); |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 484 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 485 | outw(wrd, base); |
| 486 | break; |
| 487 | } |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 488 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 489 | if (cnt <= 0) break; |
| 490 | word_count = cnt >> 1; |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 491 | outsw(base, port->xmit_buf+port->xmit_tail,word_count); |
| 492 | port->xmit_tail = (port->xmit_tail |
| 493 | + (word_count << 1)) & (SERIAL_XMIT_SIZE - 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 494 | txcount -= (word_count << 1); |
| 495 | port->xmit_cnt -= (word_count << 1); |
| 496 | if (cnt & 0x0001) { |
| 497 | residue = YES; |
| 498 | wrd = port->xmit_buf[port->xmit_tail]; |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 499 | port->xmit_tail = (port->xmit_tail + 1) |
| 500 | & (SERIAL_XMIT_SIZE - 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 501 | port->xmit_cnt--; |
| 502 | txcount--; |
| 503 | } |
| 504 | } |
| 505 | |
| 506 | InterruptTheCard(base); |
| 507 | if (port->xmit_cnt <= 0) |
| 508 | port->status &= ~ISI_TXOK; |
| 509 | if (port->xmit_cnt <= WAKEUP_CHARS) |
| 510 | schedule_work(&port->bh_tqueue); |
| 511 | unlock_card(&isi_card[card]); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 512 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 513 | |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 514 | /* schedule another tx for hopefully in about 10ms */ |
| 515 | sched_again: |
Jiri Slaby | aaa246e | 2006-01-09 20:54:23 -0800 | [diff] [blame] | 516 | if (!re_schedule) { |
| 517 | re_schedule = 2; |
| 518 | return; |
| 519 | } |
| 520 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 521 | init_timer(&tx); |
| 522 | tx.expires = jiffies + HZ/100; |
| 523 | tx.data = 0; |
| 524 | tx.function = isicom_tx; |
| 525 | add_timer(&tx); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 526 | |
| 527 | return; |
| 528 | } |
| 529 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 530 | /* Interrupt handlers */ |
| 531 | |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 532 | |
| 533 | static void isicom_bottomhalf(void *data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 534 | { |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 535 | struct isi_port *port = (struct isi_port *) data; |
| 536 | struct tty_struct *tty = port->tty; |
| 537 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 538 | if (!tty) |
| 539 | return; |
| 540 | |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 541 | tty_wakeup(tty); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 542 | wake_up_interruptible(&tty->write_wait); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 543 | } |
| 544 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 545 | /* |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 546 | * Main interrupt handler routine |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 547 | */ |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 548 | |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 549 | static irqreturn_t isicom_interrupt(int irq, void *dev_id, struct pt_regs *regs) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 550 | { |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 551 | struct isi_board *card = dev_id; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 552 | struct isi_port *port; |
| 553 | struct tty_struct *tty; |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 554 | unsigned long base; |
| 555 | u16 header, word_count, count, channel; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 556 | short byte_count; |
Alan Cox | 33f0f88 | 2006-01-09 20:54:13 -0800 | [diff] [blame] | 557 | unsigned char *rp; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 558 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 559 | if (!card || !(card->status & FIRMWARE_LOADED)) |
| 560 | return IRQ_NONE; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 561 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 562 | base = card->base; |
| 563 | spin_lock(&card->card_lock); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 564 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 565 | if (card->isa == NO) { |
| 566 | /* |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 567 | * disable any interrupts from the PCI card and lower the |
| 568 | * interrupt line |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 569 | */ |
| 570 | outw(0x8000, base+0x04); |
| 571 | ClearInterrupt(base); |
| 572 | } |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 573 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 574 | inw(base); /* get the dummy word out */ |
| 575 | header = inw(base); |
| 576 | channel = (header & 0x7800) >> card->shift_count; |
| 577 | byte_count = header & 0xff; |
| 578 | |
| 579 | if (channel + 1 > card->port_count) { |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 580 | printk(KERN_WARNING "ISICOM: isicom_interrupt(0x%lx): " |
| 581 | "%d(channel) > port_count.\n", base, channel+1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 582 | if (card->isa) |
| 583 | ClearInterrupt(base); |
| 584 | else |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 585 | outw(0x0000, base+0x04); /* enable interrupts */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 586 | spin_unlock(&card->card_lock); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 587 | return IRQ_HANDLED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 588 | } |
| 589 | port = card->ports + channel; |
| 590 | if (!(port->flags & ASYNC_INITIALIZED)) { |
| 591 | if (card->isa) |
| 592 | ClearInterrupt(base); |
| 593 | else |
| 594 | outw(0x0000, base+0x04); /* enable interrupts */ |
| 595 | return IRQ_HANDLED; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 596 | } |
| 597 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 598 | tty = port->tty; |
| 599 | if (tty == NULL) { |
| 600 | word_count = byte_count >> 1; |
| 601 | while(byte_count > 1) { |
| 602 | inw(base); |
| 603 | byte_count -= 2; |
| 604 | } |
| 605 | if (byte_count & 0x01) |
| 606 | inw(base); |
| 607 | if (card->isa == YES) |
| 608 | ClearInterrupt(base); |
| 609 | else |
| 610 | outw(0x0000, base+0x04); /* enable interrupts */ |
| 611 | spin_unlock(&card->card_lock); |
| 612 | return IRQ_HANDLED; |
| 613 | } |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 614 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 615 | if (header & 0x8000) { /* Status Packet */ |
| 616 | header = inw(base); |
| 617 | switch(header & 0xff) { |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 618 | case 0: /* Change in EIA signals */ |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 619 | if (port->flags & ASYNC_CHECK_CD) { |
| 620 | if (port->status & ISI_DCD) { |
| 621 | if (!(header & ISI_DCD)) { |
| 622 | /* Carrier has been lost */ |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 623 | pr_dbg("interrupt: DCD->low.\n" |
| 624 | ); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 625 | port->status &= ~ISI_DCD; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 626 | schedule_work(&port->hangup_tq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 627 | } |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 628 | } else if (header & ISI_DCD) { |
| 629 | /* Carrier has been detected */ |
| 630 | pr_dbg("interrupt: DCD->high.\n"); |
| 631 | port->status |= ISI_DCD; |
| 632 | wake_up_interruptible(&port->open_wait); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 633 | } |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 634 | } else { |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 635 | if (header & ISI_DCD) |
| 636 | port->status |= ISI_DCD; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 637 | else |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 638 | port->status &= ~ISI_DCD; |
| 639 | } |
| 640 | |
| 641 | if (port->flags & ASYNC_CTS_FLOW) { |
| 642 | if (port->tty->hw_stopped) { |
| 643 | if (header & ISI_CTS) { |
| 644 | port->tty->hw_stopped = 0; |
| 645 | /* start tx ing */ |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 646 | port->status |= (ISI_TXOK |
| 647 | | ISI_CTS); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 648 | schedule_work(&port->bh_tqueue); |
| 649 | } |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 650 | } else if (!(header & ISI_CTS)) { |
| 651 | port->tty->hw_stopped = 1; |
| 652 | /* stop tx ing */ |
| 653 | port->status &= ~(ISI_TXOK | ISI_CTS); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 654 | } |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 655 | } else { |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 656 | if (header & ISI_CTS) |
| 657 | port->status |= ISI_CTS; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 658 | else |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 659 | port->status &= ~ISI_CTS; |
| 660 | } |
| 661 | |
| 662 | if (header & ISI_DSR) |
| 663 | port->status |= ISI_DSR; |
| 664 | else |
| 665 | port->status &= ~ISI_DSR; |
| 666 | |
| 667 | if (header & ISI_RI) |
| 668 | port->status |= ISI_RI; |
| 669 | else |
| 670 | port->status &= ~ISI_RI; |
| 671 | |
| 672 | break; |
| 673 | |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 674 | case 1: /* Received Break !!! */ |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 675 | tty_insert_flip_char(tty, 0, TTY_BREAK); |
| 676 | if (port->flags & ASYNC_SAK) |
| 677 | do_SAK(tty); |
| 678 | tty_flip_buffer_push(tty); |
| 679 | break; |
| 680 | |
| 681 | case 2: /* Statistics */ |
Jiri Slaby | aaa246e | 2006-01-09 20:54:23 -0800 | [diff] [blame] | 682 | pr_dbg("isicom_interrupt: stats!!!.\n"); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 683 | break; |
| 684 | |
| 685 | default: |
Jiri Slaby | aaa246e | 2006-01-09 20:54:23 -0800 | [diff] [blame] | 686 | pr_dbg("Intr: Unknown code in status packet.\n"); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 687 | break; |
| 688 | } |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 689 | } else { /* Data Packet */ |
Alan Cox | 33f0f88 | 2006-01-09 20:54:13 -0800 | [diff] [blame] | 690 | |
| 691 | count = tty_prepare_flip_string(tty, &rp, byte_count & ~1); |
Jiri Slaby | aaa246e | 2006-01-09 20:54:23 -0800 | [diff] [blame] | 692 | pr_dbg("Intr: Can rx %d of %d bytes.\n", count, byte_count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 693 | word_count = count >> 1; |
Alan Cox | 33f0f88 | 2006-01-09 20:54:13 -0800 | [diff] [blame] | 694 | insw(base, rp, word_count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 695 | byte_count -= (word_count << 1); |
| 696 | if (count & 0x0001) { |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 697 | tty_insert_flip_char(tty, inw(base) & 0xff, |
| 698 | TTY_NORMAL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 699 | byte_count -= 2; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 700 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 701 | if (byte_count > 0) { |
Jiri Slaby | aaa246e | 2006-01-09 20:54:23 -0800 | [diff] [blame] | 702 | pr_dbg("Intr(0x%lx:%d): Flip buffer overflow! dropping " |
| 703 | "bytes...\n", base, channel + 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 704 | while(byte_count > 0) { /* drain out unread xtra data */ |
| 705 | inw(base); |
| 706 | byte_count -= 2; |
| 707 | } |
| 708 | } |
Alan Cox | 33f0f88 | 2006-01-09 20:54:13 -0800 | [diff] [blame] | 709 | tty_flip_buffer_push(tty); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 710 | } |
| 711 | if (card->isa == YES) |
| 712 | ClearInterrupt(base); |
| 713 | else |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 714 | outw(0x0000, base+0x04); /* enable interrupts */ |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 715 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 716 | return IRQ_HANDLED; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 717 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 718 | |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 719 | static void isicom_config_port(struct isi_port *port) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 720 | { |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 721 | struct isi_board *card = port->card; |
| 722 | struct tty_struct *tty; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 723 | unsigned long baud; |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 724 | unsigned long base = card->base; |
| 725 | u16 channel_setup, channel = port->channel, |
| 726 | shift_count = card->shift_count; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 727 | unsigned char flow_ctrl; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 728 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 729 | if (!(tty = port->tty) || !tty->termios) |
| 730 | return; |
| 731 | baud = C_BAUD(tty); |
| 732 | if (baud & CBAUDEX) { |
| 733 | baud &= ~CBAUDEX; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 734 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 735 | /* if CBAUDEX bit is on and the baud is set to either 50 or 75 |
| 736 | * then the card is programmed for 57.6Kbps or 115Kbps |
| 737 | * respectively. |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 738 | */ |
| 739 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 740 | if (baud < 1 || baud > 2) |
| 741 | port->tty->termios->c_cflag &= ~CBAUDEX; |
| 742 | else |
| 743 | baud += 15; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 744 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 745 | if (baud == 15) { |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 746 | |
| 747 | /* the ASYNC_SPD_HI and ASYNC_SPD_VHI options are set |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 748 | * by the set_serial_info ioctl ... this is done by |
| 749 | * the 'setserial' utility. |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 750 | */ |
| 751 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 752 | if ((port->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI) |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 753 | baud++; /* 57.6 Kbps */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 754 | if ((port->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI) |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 755 | baud +=2; /* 115 Kbps */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 756 | } |
| 757 | if (linuxb_to_isib[baud] == -1) { |
| 758 | /* hang up */ |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 759 | drop_dtr(port); |
| 760 | return; |
| 761 | } |
| 762 | else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 763 | raise_dtr(port); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 764 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 765 | if (lock_card(card)) { |
| 766 | outw(0x8000 | (channel << shift_count) |0x03, base); |
| 767 | outw(linuxb_to_isib[baud] << 8 | 0x03, base); |
| 768 | channel_setup = 0; |
| 769 | switch(C_CSIZE(tty)) { |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 770 | case CS5: |
| 771 | channel_setup |= ISICOM_CS5; |
| 772 | break; |
| 773 | case CS6: |
| 774 | channel_setup |= ISICOM_CS6; |
| 775 | break; |
| 776 | case CS7: |
| 777 | channel_setup |= ISICOM_CS7; |
| 778 | break; |
| 779 | case CS8: |
| 780 | channel_setup |= ISICOM_CS8; |
| 781 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 782 | } |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 783 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 784 | if (C_CSTOPB(tty)) |
| 785 | channel_setup |= ISICOM_2SB; |
| 786 | if (C_PARENB(tty)) { |
| 787 | channel_setup |= ISICOM_EVPAR; |
| 788 | if (C_PARODD(tty)) |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 789 | channel_setup |= ISICOM_ODPAR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 790 | } |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 791 | outw(channel_setup, base); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 792 | InterruptTheCard(base); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 793 | unlock_card(card); |
| 794 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 795 | if (C_CLOCAL(tty)) |
| 796 | port->flags &= ~ASYNC_CHECK_CD; |
| 797 | else |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 798 | port->flags |= ASYNC_CHECK_CD; |
| 799 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 800 | /* flow control settings ...*/ |
| 801 | flow_ctrl = 0; |
| 802 | port->flags &= ~ASYNC_CTS_FLOW; |
| 803 | if (C_CRTSCTS(tty)) { |
| 804 | port->flags |= ASYNC_CTS_FLOW; |
| 805 | flow_ctrl |= ISICOM_CTSRTS; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 806 | } |
| 807 | if (I_IXON(tty)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 808 | flow_ctrl |= ISICOM_RESPOND_XONXOFF; |
| 809 | if (I_IXOFF(tty)) |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 810 | flow_ctrl |= ISICOM_INITIATE_XONXOFF; |
| 811 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 812 | if (lock_card(card)) { |
| 813 | outw(0x8000 | (channel << shift_count) |0x04, base); |
| 814 | outw(flow_ctrl << 8 | 0x05, base); |
| 815 | outw((STOP_CHAR(tty)) << 8 | (START_CHAR(tty)), base); |
| 816 | InterruptTheCard(base); |
| 817 | unlock_card(card); |
| 818 | } |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 819 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 820 | /* rx enabled -> enable port for rx on the card */ |
| 821 | if (C_CREAD(tty)) { |
| 822 | card->port_status |= (1 << channel); |
| 823 | outw(card->port_status, base + 0x02); |
| 824 | } |
| 825 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 826 | |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 827 | /* open et all */ |
| 828 | |
| 829 | static inline void isicom_setup_board(struct isi_board *bp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 830 | { |
| 831 | int channel; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 832 | struct isi_port *port; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 833 | unsigned long flags; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 834 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 835 | spin_lock_irqsave(&bp->card_lock, flags); |
| 836 | if (bp->status & BOARD_ACTIVE) { |
| 837 | spin_unlock_irqrestore(&bp->card_lock, flags); |
| 838 | return; |
| 839 | } |
| 840 | port = bp->ports; |
| 841 | bp->status |= BOARD_ACTIVE; |
| 842 | spin_unlock_irqrestore(&bp->card_lock, flags); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 843 | for (channel = 0; channel < bp->port_count; channel++, port++) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 844 | drop_dtr_rts(port); |
| 845 | return; |
| 846 | } |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 847 | |
| 848 | static int isicom_setup_port(struct isi_port *port) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 849 | { |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 850 | struct isi_board *card = port->card; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 851 | unsigned long flags; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 852 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 853 | if (port->flags & ASYNC_INITIALIZED) { |
| 854 | return 0; |
| 855 | } |
| 856 | if (!port->xmit_buf) { |
| 857 | unsigned long page; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 858 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 859 | if (!(page = get_zeroed_page(GFP_KERNEL))) |
| 860 | return -ENOMEM; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 861 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 862 | if (port->xmit_buf) { |
| 863 | free_page(page); |
| 864 | return -ERESTARTSYS; |
| 865 | } |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 866 | port->xmit_buf = (unsigned char *) page; |
| 867 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 868 | |
| 869 | spin_lock_irqsave(&card->card_lock, flags); |
| 870 | if (port->tty) |
| 871 | clear_bit(TTY_IO_ERROR, &port->tty->flags); |
| 872 | if (port->count == 1) |
| 873 | card->count++; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 874 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 875 | port->xmit_cnt = port->xmit_head = port->xmit_tail = 0; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 876 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 877 | /* discard any residual data */ |
| 878 | kill_queue(port, ISICOM_KILLTX | ISICOM_KILLRX); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 879 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 880 | isicom_config_port(port); |
| 881 | port->flags |= ASYNC_INITIALIZED; |
| 882 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 883 | |
| 884 | return 0; |
| 885 | } |
| 886 | |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 887 | static int block_til_ready(struct tty_struct *tty, struct file *filp, |
| 888 | struct isi_port *port) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 889 | { |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 890 | struct isi_board *card = port->card; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 891 | int do_clocal = 0, retval; |
| 892 | unsigned long flags; |
| 893 | DECLARE_WAITQUEUE(wait, current); |
| 894 | |
| 895 | /* block if port is in the process of being closed */ |
| 896 | |
| 897 | if (tty_hung_up_p(filp) || port->flags & ASYNC_CLOSING) { |
Jiri Slaby | aaa246e | 2006-01-09 20:54:23 -0800 | [diff] [blame] | 898 | pr_dbg("block_til_ready: close in progress.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 899 | interruptible_sleep_on(&port->close_wait); |
| 900 | if (port->flags & ASYNC_HUP_NOTIFY) |
| 901 | return -EAGAIN; |
| 902 | else |
| 903 | return -ERESTARTSYS; |
| 904 | } |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 905 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 906 | /* if non-blocking mode is set ... */ |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 907 | |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 908 | if ((filp->f_flags & O_NONBLOCK) || |
| 909 | (tty->flags & (1 << TTY_IO_ERROR))) { |
Jiri Slaby | aaa246e | 2006-01-09 20:54:23 -0800 | [diff] [blame] | 910 | pr_dbg("block_til_ready: non-block mode.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 911 | port->flags |= ASYNC_NORMAL_ACTIVE; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 912 | return 0; |
| 913 | } |
| 914 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 915 | if (C_CLOCAL(tty)) |
| 916 | do_clocal = 1; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 917 | |
| 918 | /* block waiting for DCD to be asserted, and while |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 919 | callout dev is busy */ |
| 920 | retval = 0; |
| 921 | add_wait_queue(&port->open_wait, &wait); |
| 922 | |
| 923 | spin_lock_irqsave(&card->card_lock, flags); |
| 924 | if (!tty_hung_up_p(filp)) |
| 925 | port->count--; |
| 926 | port->blocked_open++; |
| 927 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 928 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 929 | while (1) { |
| 930 | raise_dtr_rts(port); |
| 931 | |
| 932 | set_current_state(TASK_INTERRUPTIBLE); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 933 | if (tty_hung_up_p(filp) || !(port->flags & ASYNC_INITIALIZED)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 934 | if (port->flags & ASYNC_HUP_NOTIFY) |
| 935 | retval = -EAGAIN; |
| 936 | else |
| 937 | retval = -ERESTARTSYS; |
| 938 | break; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 939 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 940 | if (!(port->flags & ASYNC_CLOSING) && |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 941 | (do_clocal || (port->status & ISI_DCD))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 942 | break; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 943 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 944 | if (signal_pending(current)) { |
| 945 | retval = -ERESTARTSYS; |
| 946 | break; |
| 947 | } |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 948 | schedule(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 949 | } |
| 950 | set_current_state(TASK_RUNNING); |
| 951 | remove_wait_queue(&port->open_wait, &wait); |
| 952 | spin_lock_irqsave(&card->card_lock, flags); |
| 953 | if (!tty_hung_up_p(filp)) |
| 954 | port->count++; |
| 955 | port->blocked_open--; |
| 956 | spin_unlock_irqrestore(&card->card_lock, flags); |
| 957 | if (retval) |
| 958 | return retval; |
| 959 | port->flags |= ASYNC_NORMAL_ACTIVE; |
| 960 | return 0; |
| 961 | } |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 962 | |
| 963 | static int isicom_open(struct tty_struct *tty, struct file *filp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 964 | { |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 965 | struct isi_port *port; |
| 966 | struct isi_board *card; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 967 | unsigned int line, board; |
| 968 | int error; |
| 969 | |
| 970 | line = tty->index; |
| 971 | if (line < 0 || line > PORT_COUNT-1) |
| 972 | return -ENODEV; |
| 973 | board = BOARD(line); |
| 974 | card = &isi_card[board]; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 975 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 976 | if (!(card->status & FIRMWARE_LOADED)) |
| 977 | return -ENODEV; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 978 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 979 | /* open on a port greater than the port count for the card !!! */ |
| 980 | if (line > ((board * 16) + card->port_count - 1)) |
| 981 | return -ENODEV; |
| 982 | |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 983 | port = &isi_ports[line]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 984 | if (isicom_paranoia_check(port, tty->name, "isicom_open")) |
| 985 | return -ENODEV; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 986 | |
| 987 | isicom_setup_board(card); |
| 988 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 989 | port->count++; |
| 990 | tty->driver_data = port; |
| 991 | port->tty = tty; |
| 992 | if ((error = isicom_setup_port(port))!=0) |
| 993 | return error; |
| 994 | if ((error = block_til_ready(tty, filp, port))!=0) |
| 995 | return error; |
| 996 | |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 997 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 998 | } |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 999 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1000 | /* close et all */ |
| 1001 | |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1002 | static inline void isicom_shutdown_board(struct isi_board *bp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1003 | { |
| 1004 | unsigned long flags; |
| 1005 | |
| 1006 | spin_lock_irqsave(&bp->card_lock, flags); |
| 1007 | if (bp->status & BOARD_ACTIVE) { |
| 1008 | bp->status &= ~BOARD_ACTIVE; |
| 1009 | } |
| 1010 | spin_unlock_irqrestore(&bp->card_lock, flags); |
| 1011 | } |
| 1012 | |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1013 | static void isicom_shutdown_port(struct isi_port *port) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1014 | { |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1015 | struct isi_board *card = port->card; |
| 1016 | struct tty_struct *tty; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1017 | unsigned long flags; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1018 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1019 | tty = port->tty; |
| 1020 | |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1021 | spin_lock_irqsave(&card->card_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1022 | if (!(port->flags & ASYNC_INITIALIZED)) { |
| 1023 | spin_unlock_irqrestore(&card->card_lock, flags); |
| 1024 | return; |
| 1025 | } |
| 1026 | if (port->xmit_buf) { |
| 1027 | free_page((unsigned long) port->xmit_buf); |
| 1028 | port->xmit_buf = NULL; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1029 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1030 | port->flags &= ~ASYNC_INITIALIZED; |
| 1031 | /* 3rd October 2000 : Vinayak P Risbud */ |
| 1032 | port->tty = NULL; |
| 1033 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1034 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1035 | /*Fix done by Anil .S on 30-04-2001 |
| 1036 | remote login through isi port has dtr toggle problem |
| 1037 | due to which the carrier drops before the password prompt |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1038 | appears on the remote end. Now we drop the dtr only if the |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1039 | HUPCL(Hangup on close) flag is set for the tty*/ |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1040 | |
| 1041 | if (C_HUPCL(tty)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1042 | /* drop dtr on this port */ |
| 1043 | drop_dtr(port); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1044 | |
| 1045 | /* any other port uninits */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1046 | if (tty) |
| 1047 | set_bit(TTY_IO_ERROR, &tty->flags); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1048 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1049 | if (--card->count < 0) { |
Jiri Slaby | aaa246e | 2006-01-09 20:54:23 -0800 | [diff] [blame] | 1050 | pr_dbg("isicom_shutdown_port: bad board(0x%lx) count %d.\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1051 | card->base, card->count); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1052 | card->count = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1053 | } |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1054 | |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 1055 | /* last port was closed, shutdown that boad too */ |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1056 | if (C_HUPCL(tty)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1057 | if (!card->count) |
| 1058 | isicom_shutdown_board(card); |
| 1059 | } |
| 1060 | } |
| 1061 | |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1062 | static void isicom_close(struct tty_struct *tty, struct file *filp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1063 | { |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 1064 | struct isi_port *port = tty->driver_data; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1065 | struct isi_board *card = port->card; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1066 | unsigned long flags; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1067 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1068 | if (!port) |
| 1069 | return; |
| 1070 | if (isicom_paranoia_check(port, tty->name, "isicom_close")) |
| 1071 | return; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1072 | |
Jiri Slaby | aaa246e | 2006-01-09 20:54:23 -0800 | [diff] [blame] | 1073 | pr_dbg("Close start!!!.\n"); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1074 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1075 | spin_lock_irqsave(&card->card_lock, flags); |
| 1076 | if (tty_hung_up_p(filp)) { |
| 1077 | spin_unlock_irqrestore(&card->card_lock, flags); |
| 1078 | return; |
| 1079 | } |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1080 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1081 | if (tty->count == 1 && port->count != 1) { |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 1082 | printk(KERN_WARNING "ISICOM:(0x%lx) isicom_close: bad port " |
| 1083 | "count tty->count = 1 port count = %d.\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1084 | card->base, port->count); |
| 1085 | port->count = 1; |
| 1086 | } |
| 1087 | if (--port->count < 0) { |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 1088 | printk(KERN_WARNING "ISICOM:(0x%lx) isicom_close: bad port " |
| 1089 | "count for channel%d = %d", card->base, port->channel, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1090 | port->count); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1091 | port->count = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1092 | } |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1093 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1094 | if (port->count) { |
| 1095 | spin_unlock_irqrestore(&card->card_lock, flags); |
| 1096 | return; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1097 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1098 | port->flags |= ASYNC_CLOSING; |
| 1099 | tty->closing = 1; |
| 1100 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1101 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1102 | if (port->closing_wait != ASYNC_CLOSING_WAIT_NONE) |
| 1103 | tty_wait_until_sent(tty, port->closing_wait); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1104 | /* indicate to the card that no more data can be received |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1105 | on this port */ |
| 1106 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1107 | if (port->flags & ASYNC_INITIALIZED) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1108 | card->port_status &= ~(1 << port->channel); |
| 1109 | outw(card->port_status, card->base + 0x02); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1110 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1111 | isicom_shutdown_port(port); |
| 1112 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1113 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1114 | if (tty->driver->flush_buffer) |
| 1115 | tty->driver->flush_buffer(tty); |
| 1116 | tty_ldisc_flush(tty); |
| 1117 | |
| 1118 | spin_lock_irqsave(&card->card_lock, flags); |
| 1119 | tty->closing = 0; |
| 1120 | |
| 1121 | if (port->blocked_open) { |
| 1122 | spin_unlock_irqrestore(&card->card_lock, flags); |
| 1123 | if (port->close_delay) { |
Jiri Slaby | aaa246e | 2006-01-09 20:54:23 -0800 | [diff] [blame] | 1124 | pr_dbg("scheduling until time out.\n"); |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 1125 | msleep_interruptible( |
| 1126 | jiffies_to_msecs(port->close_delay)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1127 | } |
| 1128 | spin_lock_irqsave(&card->card_lock, flags); |
| 1129 | wake_up_interruptible(&port->open_wait); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1130 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1131 | port->flags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CLOSING); |
| 1132 | wake_up_interruptible(&port->close_wait); |
| 1133 | spin_unlock_irqrestore(&card->card_lock, flags); |
| 1134 | } |
| 1135 | |
| 1136 | /* write et all */ |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1137 | static int isicom_write(struct tty_struct *tty, const unsigned char *buf, |
| 1138 | int count) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1139 | { |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 1140 | struct isi_port *port = tty->driver_data; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1141 | struct isi_board *card = port->card; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1142 | unsigned long flags; |
| 1143 | int cnt, total = 0; |
| 1144 | |
| 1145 | if (isicom_paranoia_check(port, tty->name, "isicom_write")) |
| 1146 | return 0; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1147 | |
Eric Sesterhenn | 326f28e9 | 2006-06-25 05:48:48 -0700 | [diff] [blame^] | 1148 | if (!port->xmit_buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1149 | return 0; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1150 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1151 | spin_lock_irqsave(&card->card_lock, flags); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1152 | |
| 1153 | while(1) { |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 1154 | cnt = min_t(int, count, min(SERIAL_XMIT_SIZE - port->xmit_cnt |
| 1155 | - 1, SERIAL_XMIT_SIZE - port->xmit_head)); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1156 | if (cnt <= 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1157 | break; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1158 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1159 | memcpy(port->xmit_buf + port->xmit_head, buf, cnt); |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 1160 | port->xmit_head = (port->xmit_head + cnt) & (SERIAL_XMIT_SIZE |
| 1161 | - 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1162 | port->xmit_cnt += cnt; |
| 1163 | buf += cnt; |
| 1164 | count -= cnt; |
| 1165 | total += cnt; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1166 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1167 | if (port->xmit_cnt && !tty->stopped && !tty->hw_stopped) |
| 1168 | port->status |= ISI_TXOK; |
| 1169 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1170 | return total; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1171 | } |
| 1172 | |
| 1173 | /* put_char et all */ |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1174 | static void isicom_put_char(struct tty_struct *tty, unsigned char ch) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1175 | { |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 1176 | struct isi_port *port = tty->driver_data; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1177 | struct isi_board *card = port->card; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1178 | unsigned long flags; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1179 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1180 | if (isicom_paranoia_check(port, tty->name, "isicom_put_char")) |
| 1181 | return; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1182 | |
Eric Sesterhenn | 326f28e9 | 2006-06-25 05:48:48 -0700 | [diff] [blame^] | 1183 | if (!port->xmit_buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1184 | return; |
| 1185 | |
| 1186 | spin_lock_irqsave(&card->card_lock, flags); |
| 1187 | if (port->xmit_cnt >= SERIAL_XMIT_SIZE - 1) { |
| 1188 | spin_unlock_irqrestore(&card->card_lock, flags); |
| 1189 | return; |
| 1190 | } |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1191 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1192 | port->xmit_buf[port->xmit_head++] = ch; |
| 1193 | port->xmit_head &= (SERIAL_XMIT_SIZE - 1); |
| 1194 | port->xmit_cnt++; |
| 1195 | spin_unlock_irqrestore(&card->card_lock, flags); |
| 1196 | } |
| 1197 | |
| 1198 | /* flush_chars et all */ |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1199 | static void isicom_flush_chars(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1200 | { |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 1201 | struct isi_port *port = tty->driver_data; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1202 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1203 | if (isicom_paranoia_check(port, tty->name, "isicom_flush_chars")) |
| 1204 | return; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1205 | |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 1206 | if (port->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped || |
| 1207 | !port->xmit_buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1208 | return; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1209 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1210 | /* this tells the transmitter to consider this port for |
| 1211 | data output to the card ... that's the best we can do. */ |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1212 | port->status |= ISI_TXOK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1213 | } |
| 1214 | |
| 1215 | /* write_room et all */ |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1216 | static int isicom_write_room(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1217 | { |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 1218 | struct isi_port *port = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1219 | int free; |
| 1220 | |
| 1221 | if (isicom_paranoia_check(port, tty->name, "isicom_write_room")) |
| 1222 | return 0; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1223 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1224 | free = SERIAL_XMIT_SIZE - port->xmit_cnt - 1; |
| 1225 | if (free < 0) |
| 1226 | free = 0; |
| 1227 | return free; |
| 1228 | } |
| 1229 | |
| 1230 | /* chars_in_buffer et all */ |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1231 | static int isicom_chars_in_buffer(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1232 | { |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 1233 | struct isi_port *port = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1234 | if (isicom_paranoia_check(port, tty->name, "isicom_chars_in_buffer")) |
| 1235 | return 0; |
| 1236 | return port->xmit_cnt; |
| 1237 | } |
| 1238 | |
| 1239 | /* ioctl et all */ |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 1240 | static inline void isicom_send_break(struct isi_port *port, |
| 1241 | unsigned long length) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1242 | { |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1243 | struct isi_board *card = port->card; |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 1244 | unsigned long base = card->base; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1245 | |
| 1246 | if (!lock_card(card)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1247 | return; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1248 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1249 | outw(0x8000 | ((port->channel) << (card->shift_count)) | 0x3, base); |
| 1250 | outw((length & 0xff) << 8 | 0x00, base); |
| 1251 | outw((length & 0xff00), base); |
| 1252 | InterruptTheCard(base); |
| 1253 | |
| 1254 | unlock_card(card); |
| 1255 | } |
| 1256 | |
| 1257 | static int isicom_tiocmget(struct tty_struct *tty, struct file *file) |
| 1258 | { |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 1259 | struct isi_port *port = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1260 | /* just send the port status */ |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 1261 | u16 status = port->status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1262 | |
| 1263 | if (isicom_paranoia_check(port, tty->name, "isicom_ioctl")) |
| 1264 | return -ENODEV; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1265 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1266 | return ((status & ISI_RTS) ? TIOCM_RTS : 0) | |
| 1267 | ((status & ISI_DTR) ? TIOCM_DTR : 0) | |
| 1268 | ((status & ISI_DCD) ? TIOCM_CAR : 0) | |
| 1269 | ((status & ISI_DSR) ? TIOCM_DSR : 0) | |
| 1270 | ((status & ISI_CTS) ? TIOCM_CTS : 0) | |
| 1271 | ((status & ISI_RI ) ? TIOCM_RI : 0); |
| 1272 | } |
| 1273 | |
| 1274 | static int isicom_tiocmset(struct tty_struct *tty, struct file *file, |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1275 | unsigned int set, unsigned int clear) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1276 | { |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 1277 | struct isi_port *port = tty->driver_data; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1278 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1279 | if (isicom_paranoia_check(port, tty->name, "isicom_ioctl")) |
| 1280 | return -ENODEV; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1281 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1282 | if (set & TIOCM_RTS) |
| 1283 | raise_rts(port); |
| 1284 | if (set & TIOCM_DTR) |
| 1285 | raise_dtr(port); |
| 1286 | |
| 1287 | if (clear & TIOCM_RTS) |
| 1288 | drop_rts(port); |
| 1289 | if (clear & TIOCM_DTR) |
| 1290 | drop_dtr(port); |
| 1291 | |
| 1292 | return 0; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1293 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1294 | |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1295 | static int isicom_set_serial_info(struct isi_port *port, |
| 1296 | struct serial_struct __user *info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1297 | { |
| 1298 | struct serial_struct newinfo; |
| 1299 | int reconfig_port; |
| 1300 | |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1301 | if (copy_from_user(&newinfo, info, sizeof(newinfo))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1302 | return -EFAULT; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1303 | |
| 1304 | reconfig_port = ((port->flags & ASYNC_SPD_MASK) != |
| 1305 | (newinfo.flags & ASYNC_SPD_MASK)); |
| 1306 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1307 | if (!capable(CAP_SYS_ADMIN)) { |
| 1308 | if ((newinfo.close_delay != port->close_delay) || |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1309 | (newinfo.closing_wait != port->closing_wait) || |
| 1310 | ((newinfo.flags & ~ASYNC_USR_MASK) != |
| 1311 | (port->flags & ~ASYNC_USR_MASK))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1312 | return -EPERM; |
| 1313 | port->flags = ((port->flags & ~ ASYNC_USR_MASK) | |
| 1314 | (newinfo.flags & ASYNC_USR_MASK)); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1315 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1316 | else { |
| 1317 | port->close_delay = newinfo.close_delay; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1318 | port->closing_wait = newinfo.closing_wait; |
| 1319 | port->flags = ((port->flags & ~ASYNC_FLAGS) | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1320 | (newinfo.flags & ASYNC_FLAGS)); |
| 1321 | } |
| 1322 | if (reconfig_port) { |
| 1323 | isicom_config_port(port); |
| 1324 | } |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1325 | return 0; |
| 1326 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1327 | |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1328 | static int isicom_get_serial_info(struct isi_port *port, |
| 1329 | struct serial_struct __user *info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1330 | { |
| 1331 | struct serial_struct out_info; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1332 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1333 | memset(&out_info, 0, sizeof(out_info)); |
| 1334 | /* out_info.type = ? */ |
| 1335 | out_info.line = port - isi_ports; |
| 1336 | out_info.port = port->card->base; |
| 1337 | out_info.irq = port->card->irq; |
| 1338 | out_info.flags = port->flags; |
| 1339 | /* out_info.baud_base = ? */ |
| 1340 | out_info.close_delay = port->close_delay; |
| 1341 | out_info.closing_wait = port->closing_wait; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1342 | if (copy_to_user(info, &out_info, sizeof(out_info))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1343 | return -EFAULT; |
| 1344 | return 0; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1345 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1346 | |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1347 | static int isicom_ioctl(struct tty_struct *tty, struct file *filp, |
| 1348 | unsigned int cmd, unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1349 | { |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 1350 | struct isi_port *port = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1351 | void __user *argp = (void __user *)arg; |
| 1352 | int retval; |
| 1353 | |
| 1354 | if (isicom_paranoia_check(port, tty->name, "isicom_ioctl")) |
| 1355 | return -ENODEV; |
| 1356 | |
| 1357 | switch(cmd) { |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1358 | case TCSBRK: |
| 1359 | retval = tty_check_change(tty); |
| 1360 | if (retval) |
| 1361 | return retval; |
| 1362 | tty_wait_until_sent(tty, 0); |
| 1363 | if (!arg) |
| 1364 | isicom_send_break(port, HZ/4); |
| 1365 | return 0; |
| 1366 | |
| 1367 | case TCSBRKP: |
| 1368 | retval = tty_check_change(tty); |
| 1369 | if (retval) |
| 1370 | return retval; |
| 1371 | tty_wait_until_sent(tty, 0); |
| 1372 | isicom_send_break(port, arg ? arg * (HZ/10) : HZ/4); |
| 1373 | return 0; |
| 1374 | |
| 1375 | case TIOCGSOFTCAR: |
Jiri Slaby | a547dfe | 2006-01-09 20:54:26 -0800 | [diff] [blame] | 1376 | return put_user(C_CLOCAL(tty) ? 1 : 0, |
| 1377 | (unsigned long __user *)argp); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1378 | |
| 1379 | case TIOCSSOFTCAR: |
| 1380 | if (get_user(arg, (unsigned long __user *) argp)) |
| 1381 | return -EFAULT; |
| 1382 | tty->termios->c_cflag = |
| 1383 | ((tty->termios->c_cflag & ~CLOCAL) | |
| 1384 | (arg ? CLOCAL : 0)); |
| 1385 | return 0; |
| 1386 | |
| 1387 | case TIOCGSERIAL: |
| 1388 | return isicom_get_serial_info(port, argp); |
| 1389 | |
| 1390 | case TIOCSSERIAL: |
| 1391 | return isicom_set_serial_info(port, argp); |
| 1392 | |
| 1393 | default: |
| 1394 | return -ENOIOCTLCMD; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1395 | } |
| 1396 | return 0; |
| 1397 | } |
| 1398 | |
| 1399 | /* set_termios et all */ |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1400 | static void isicom_set_termios(struct tty_struct *tty, |
| 1401 | struct termios *old_termios) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1402 | { |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 1403 | struct isi_port *port = tty->driver_data; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1404 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1405 | if (isicom_paranoia_check(port, tty->name, "isicom_set_termios")) |
| 1406 | return; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1407 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1408 | if (tty->termios->c_cflag == old_termios->c_cflag && |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1409 | tty->termios->c_iflag == old_termios->c_iflag) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1410 | return; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1411 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1412 | isicom_config_port(port); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1413 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1414 | if ((old_termios->c_cflag & CRTSCTS) && |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1415 | !(tty->termios->c_cflag & CRTSCTS)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1416 | tty->hw_stopped = 0; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1417 | isicom_start(tty); |
| 1418 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1419 | } |
| 1420 | |
| 1421 | /* throttle et all */ |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1422 | static void isicom_throttle(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1423 | { |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 1424 | struct isi_port *port = tty->driver_data; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1425 | struct isi_board *card = port->card; |
| 1426 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1427 | if (isicom_paranoia_check(port, tty->name, "isicom_throttle")) |
| 1428 | return; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1429 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1430 | /* tell the card that this port cannot handle any more data for now */ |
| 1431 | card->port_status &= ~(1 << port->channel); |
| 1432 | outw(card->port_status, card->base + 0x02); |
| 1433 | } |
| 1434 | |
| 1435 | /* unthrottle et all */ |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1436 | static void isicom_unthrottle(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1437 | { |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 1438 | struct isi_port *port = tty->driver_data; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1439 | struct isi_board *card = port->card; |
| 1440 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1441 | if (isicom_paranoia_check(port, tty->name, "isicom_unthrottle")) |
| 1442 | return; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1443 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1444 | /* tell the card that this port is ready to accept more data */ |
| 1445 | card->port_status |= (1 << port->channel); |
| 1446 | outw(card->port_status, card->base + 0x02); |
| 1447 | } |
| 1448 | |
| 1449 | /* stop et all */ |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1450 | static void isicom_stop(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1451 | { |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 1452 | struct isi_port *port = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1453 | |
| 1454 | if (isicom_paranoia_check(port, tty->name, "isicom_stop")) |
| 1455 | return; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1456 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1457 | /* this tells the transmitter not to consider this port for |
| 1458 | data output to the card. */ |
| 1459 | port->status &= ~ISI_TXOK; |
| 1460 | } |
| 1461 | |
| 1462 | /* start et all */ |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1463 | static void isicom_start(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1464 | { |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 1465 | struct isi_port *port = tty->driver_data; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1466 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1467 | if (isicom_paranoia_check(port, tty->name, "isicom_start")) |
| 1468 | return; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1469 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1470 | /* this tells the transmitter to consider this port for |
| 1471 | data output to the card. */ |
| 1472 | port->status |= ISI_TXOK; |
| 1473 | } |
| 1474 | |
| 1475 | /* hangup et all */ |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1476 | static void do_isicom_hangup(void *data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1477 | { |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 1478 | struct isi_port *port = data; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1479 | struct tty_struct *tty; |
| 1480 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1481 | tty = port->tty; |
| 1482 | if (tty) |
| 1483 | tty_hangup(tty); |
| 1484 | } |
| 1485 | |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1486 | static void isicom_hangup(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1487 | { |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 1488 | struct isi_port *port = tty->driver_data; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1489 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1490 | if (isicom_paranoia_check(port, tty->name, "isicom_hangup")) |
| 1491 | return; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1492 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1493 | isicom_shutdown_port(port); |
| 1494 | port->count = 0; |
| 1495 | port->flags &= ~ASYNC_NORMAL_ACTIVE; |
| 1496 | port->tty = NULL; |
| 1497 | wake_up_interruptible(&port->open_wait); |
| 1498 | } |
| 1499 | |
| 1500 | /* flush_buffer et all */ |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1501 | static void isicom_flush_buffer(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1502 | { |
Jiri Slaby | 8070e35 | 2006-01-09 20:54:22 -0800 | [diff] [blame] | 1503 | struct isi_port *port = tty->driver_data; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1504 | struct isi_board *card = port->card; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1505 | unsigned long flags; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1506 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1507 | if (isicom_paranoia_check(port, tty->name, "isicom_flush_buffer")) |
| 1508 | return; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1509 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1510 | spin_lock_irqsave(&card->card_lock, flags); |
| 1511 | port->xmit_cnt = port->xmit_head = port->xmit_tail = 0; |
| 1512 | spin_unlock_irqrestore(&card->card_lock, flags); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1513 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1514 | wake_up_interruptible(&tty->write_wait); |
| 1515 | tty_wakeup(tty); |
| 1516 | } |
| 1517 | |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1518 | /* |
| 1519 | * Driver init and deinit functions |
| 1520 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1521 | |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1522 | static int __devinit isicom_register_ioregion(struct pci_dev *pdev, |
| 1523 | const unsigned int index) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1524 | { |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1525 | struct isi_board *board = pci_get_drvdata(pdev); |
| 1526 | |
| 1527 | if (!board->base) |
| 1528 | return -EINVAL; |
| 1529 | |
| 1530 | if (!request_region(board->base, 16, ISICOM_NAME)) { |
| 1531 | dev_dbg(&pdev->dev, "I/O Region 0x%lx-0x%lx is busy. Card%d " |
| 1532 | "will be disabled.\n", board->base, board->base + 15, |
| 1533 | index + 1); |
| 1534 | return -EBUSY; |
| 1535 | } |
| 1536 | |
| 1537 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1538 | } |
| 1539 | |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1540 | static void isicom_unregister_ioregion(struct pci_dev *pdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1541 | { |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1542 | struct isi_board *board = pci_get_drvdata(pdev); |
| 1543 | |
| 1544 | if (!board->base) |
| 1545 | return; |
| 1546 | |
| 1547 | release_region(board->base, 16); |
| 1548 | dev_dbg(&pdev->dev, "I/O Region 0x%lx-0x%lx released.\n", |
| 1549 | board->base, board->base + 15); |
| 1550 | board->base = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1551 | } |
| 1552 | |
| 1553 | static struct tty_operations isicom_ops = { |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1554 | .open = isicom_open, |
| 1555 | .close = isicom_close, |
| 1556 | .write = isicom_write, |
| 1557 | .put_char = isicom_put_char, |
| 1558 | .flush_chars = isicom_flush_chars, |
| 1559 | .write_room = isicom_write_room, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1560 | .chars_in_buffer = isicom_chars_in_buffer, |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1561 | .ioctl = isicom_ioctl, |
| 1562 | .set_termios = isicom_set_termios, |
| 1563 | .throttle = isicom_throttle, |
| 1564 | .unthrottle = isicom_unthrottle, |
| 1565 | .stop = isicom_stop, |
| 1566 | .start = isicom_start, |
| 1567 | .hangup = isicom_hangup, |
| 1568 | .flush_buffer = isicom_flush_buffer, |
| 1569 | .tiocmget = isicom_tiocmget, |
| 1570 | .tiocmset = isicom_tiocmset, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1571 | }; |
| 1572 | |
Jiri Slaby | aaa246e | 2006-01-09 20:54:23 -0800 | [diff] [blame] | 1573 | static int __devinit isicom_register_tty_driver(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1574 | { |
Jiri Slaby | aaa246e | 2006-01-09 20:54:23 -0800 | [diff] [blame] | 1575 | int error = -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1576 | |
| 1577 | /* tty driver structure initialization */ |
| 1578 | isicom_normal = alloc_tty_driver(PORT_COUNT); |
| 1579 | if (!isicom_normal) |
Jiri Slaby | aaa246e | 2006-01-09 20:54:23 -0800 | [diff] [blame] | 1580 | goto end; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1581 | |
Jiri Slaby | aaa246e | 2006-01-09 20:54:23 -0800 | [diff] [blame] | 1582 | isicom_normal->owner = THIS_MODULE; |
| 1583 | isicom_normal->name = "ttyM"; |
| 1584 | isicom_normal->devfs_name = "isicom/"; |
| 1585 | isicom_normal->major = ISICOM_NMAJOR; |
| 1586 | isicom_normal->minor_start = 0; |
| 1587 | isicom_normal->type = TTY_DRIVER_TYPE_SERIAL; |
| 1588 | isicom_normal->subtype = SERIAL_TYPE_NORMAL; |
| 1589 | isicom_normal->init_termios = tty_std_termios; |
| 1590 | isicom_normal->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | |
| 1591 | CLOCAL; |
| 1592 | isicom_normal->flags = TTY_DRIVER_REAL_RAW; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1593 | tty_set_operations(isicom_normal, &isicom_ops); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1594 | |
Jiri Slaby | aaa246e | 2006-01-09 20:54:23 -0800 | [diff] [blame] | 1595 | if ((error = tty_register_driver(isicom_normal))) { |
| 1596 | pr_dbg("Couldn't register the dialin driver, error=%d\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1597 | error); |
| 1598 | put_tty_driver(isicom_normal); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1599 | } |
Jiri Slaby | aaa246e | 2006-01-09 20:54:23 -0800 | [diff] [blame] | 1600 | end: |
| 1601 | return error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1602 | } |
| 1603 | |
Jiri Slaby | aaa246e | 2006-01-09 20:54:23 -0800 | [diff] [blame] | 1604 | static void isicom_unregister_tty_driver(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1605 | { |
Jiri Slaby | aaa246e | 2006-01-09 20:54:23 -0800 | [diff] [blame] | 1606 | int error; |
| 1607 | |
| 1608 | if ((error = tty_unregister_driver(isicom_normal))) |
| 1609 | pr_dbg("couldn't unregister normal driver, error=%d.\n", error); |
| 1610 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1611 | put_tty_driver(isicom_normal); |
| 1612 | } |
| 1613 | |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1614 | static int __devinit isicom_register_isr(struct pci_dev *pdev, |
| 1615 | const unsigned int index) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1616 | { |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1617 | struct isi_board *board = pci_get_drvdata(pdev); |
| 1618 | unsigned long irqflags = SA_INTERRUPT; |
| 1619 | int retval = -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1620 | |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1621 | if (!board->base) |
| 1622 | goto end; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1623 | |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1624 | if (board->isa == NO) |
| 1625 | irqflags |= SA_SHIRQ; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1626 | |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1627 | retval = request_irq(board->irq, isicom_interrupt, irqflags, |
| 1628 | ISICOM_NAME, board); |
| 1629 | if (retval < 0) |
| 1630 | dev_warn(&pdev->dev, "Could not install handler at Irq %d. " |
| 1631 | "Card%d will be disabled.\n", board->irq, index + 1); |
| 1632 | else |
| 1633 | retval = 0; |
| 1634 | end: |
| 1635 | return retval; |
| 1636 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1637 | |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1638 | static int __devinit reset_card(struct pci_dev *pdev, |
| 1639 | const unsigned int card, unsigned int *signature) |
| 1640 | { |
| 1641 | struct isi_board *board = pci_get_drvdata(pdev); |
| 1642 | unsigned long base = board->base; |
| 1643 | unsigned int portcount = 0; |
| 1644 | int retval = 0; |
| 1645 | |
| 1646 | dev_dbg(&pdev->dev, "ISILoad:Resetting Card%d at 0x%lx\n", card + 1, |
| 1647 | base); |
| 1648 | |
| 1649 | inw(base + 0x8); |
| 1650 | |
| 1651 | mdelay(10); |
| 1652 | |
| 1653 | outw(0, base + 0x8); /* Reset */ |
| 1654 | |
| 1655 | msleep(3000); |
| 1656 | |
| 1657 | *signature = inw(base + 0x4) & 0xff; |
| 1658 | |
| 1659 | if (board->isa == YES) { |
| 1660 | if (!(inw(base + 0xe) & 0x1) || (inw(base + 0x2))) { |
| 1661 | dev_dbg(&pdev->dev, "base+0x2=0x%lx, base+0xe=0x%lx\n", |
| 1662 | inw(base + 0x2), inw(base + 0xe)); |
| 1663 | dev_err(&pdev->dev, "ISILoad:ISA Card%d reset failure " |
| 1664 | "(Possible bad I/O Port Address 0x%lx).\n", |
| 1665 | card + 1, base); |
| 1666 | retval = -EIO; |
| 1667 | goto end; |
| 1668 | } |
| 1669 | } else { |
| 1670 | portcount = inw(base + 0x2); |
| 1671 | if (!(inw(base + 0xe) & 0x1) || ((portcount != 0) && |
| 1672 | (portcount != 4) && (portcount != 8))) { |
| 1673 | dev_dbg(&pdev->dev, "base+0x2=0x%lx, base+0xe=0x%lx\n", |
| 1674 | inw(base + 0x2), inw(base + 0xe)); |
| 1675 | dev_err(&pdev->dev, "ISILoad:PCI Card%d reset failure " |
| 1676 | "(Possible bad I/O Port Address 0x%lx).\n", |
| 1677 | card + 1, base); |
| 1678 | retval = -EIO; |
| 1679 | goto end; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1680 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1681 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1682 | |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1683 | switch (*signature) { |
| 1684 | case 0xa5: |
| 1685 | case 0xbb: |
| 1686 | case 0xdd: |
| 1687 | board->port_count = (board->isa == NO && portcount == 4) ? 4 : |
| 1688 | 8; |
| 1689 | board->shift_count = 12; |
| 1690 | break; |
| 1691 | case 0xcc: |
| 1692 | board->port_count = 16; |
| 1693 | board->shift_count = 11; |
| 1694 | break; |
| 1695 | default: |
| 1696 | dev_warn(&pdev->dev, "ISILoad:Card%d reset failure (Possible " |
| 1697 | "bad I/O Port Address 0x%lx).\n", card + 1, base); |
| 1698 | dev_dbg(&pdev->dev, "Sig=0x%lx\n", signature); |
| 1699 | retval = -EIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1700 | } |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1701 | dev_info(&pdev->dev, "-Done\n"); |
| 1702 | |
| 1703 | end: |
| 1704 | return retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1705 | } |
| 1706 | |
Jiri Slaby | e65c1db | 2006-01-09 20:54:25 -0800 | [diff] [blame] | 1707 | static inline int WaitTillCardIsFree(u16 base) |
| 1708 | { |
| 1709 | unsigned long count = 0; |
| 1710 | |
| 1711 | while (!(inw(base + 0xe) & 0x1) && count++ < 100) |
| 1712 | msleep(5); |
| 1713 | |
| 1714 | return !(inw(base + 0xe) & 0x1); |
| 1715 | } |
| 1716 | |
| 1717 | static int __devinit load_firmware(struct pci_dev *pdev, |
| 1718 | const unsigned int index, const unsigned int signature) |
| 1719 | { |
| 1720 | struct isi_board *board = pci_get_drvdata(pdev); |
| 1721 | const struct firmware *fw; |
| 1722 | unsigned long base = board->base; |
| 1723 | unsigned int a; |
| 1724 | u16 word_count, status; |
| 1725 | int retval = -EIO; |
| 1726 | char *name; |
| 1727 | u8 *data; |
| 1728 | |
| 1729 | struct stframe { |
| 1730 | u16 addr; |
| 1731 | u16 count; |
| 1732 | u8 data[0]; |
| 1733 | } *frame; |
| 1734 | |
| 1735 | switch (signature) { |
| 1736 | case 0xa5: |
| 1737 | name = "isi608.bin"; |
| 1738 | break; |
| 1739 | case 0xbb: |
| 1740 | name = "isi608em.bin"; |
| 1741 | break; |
| 1742 | case 0xcc: |
| 1743 | name = "isi616em.bin"; |
| 1744 | break; |
| 1745 | case 0xdd: |
| 1746 | name = "isi4608.bin"; |
| 1747 | break; |
| 1748 | case 0xee: |
| 1749 | name = "isi4616.bin"; |
| 1750 | break; |
| 1751 | default: |
| 1752 | dev_err(&pdev->dev, "Unknown signature.\n"); |
| 1753 | goto end; |
| 1754 | } |
| 1755 | |
| 1756 | retval = request_firmware(&fw, name, &pdev->dev); |
| 1757 | if (retval) |
| 1758 | goto end; |
| 1759 | |
| 1760 | for (frame = (struct stframe *)fw->data; |
| 1761 | frame < (struct stframe *)(fw->data + fw->size); |
| 1762 | frame++) { |
| 1763 | if (WaitTillCardIsFree(base)) |
| 1764 | goto errrelfw; |
| 1765 | |
| 1766 | outw(0xf0, base); /* start upload sequence */ |
| 1767 | outw(0x00, base); |
| 1768 | outw(frame->addr, base); /* lsb of address */ |
| 1769 | |
| 1770 | word_count = frame->count / 2 + frame->count % 2; |
| 1771 | outw(word_count, base); |
| 1772 | InterruptTheCard(base); |
| 1773 | |
| 1774 | udelay(100); /* 0x2f */ |
| 1775 | |
| 1776 | if (WaitTillCardIsFree(base)) |
| 1777 | goto errrelfw; |
| 1778 | |
| 1779 | if ((status = inw(base + 0x4)) != 0) { |
| 1780 | dev_warn(&pdev->dev, "Card%d rejected load header:\n" |
| 1781 | "Address:0x%x\nCount:0x%x\nStatus:0x%x\n", |
| 1782 | index + 1, frame->addr, frame->count, status); |
| 1783 | goto errrelfw; |
| 1784 | } |
| 1785 | outsw(base, frame->data, word_count); |
| 1786 | |
| 1787 | InterruptTheCard(base); |
| 1788 | |
| 1789 | udelay(50); /* 0x0f */ |
| 1790 | |
| 1791 | if (WaitTillCardIsFree(base)) |
| 1792 | goto errrelfw; |
| 1793 | |
| 1794 | if ((status = inw(base + 0x4)) != 0) { |
| 1795 | dev_err(&pdev->dev, "Card%d got out of sync.Card " |
| 1796 | "Status:0x%x\n", index + 1, status); |
| 1797 | goto errrelfw; |
| 1798 | } |
| 1799 | } |
| 1800 | |
| 1801 | retval = -EIO; |
| 1802 | |
| 1803 | if (WaitTillCardIsFree(base)) |
| 1804 | goto errrelfw; |
| 1805 | |
| 1806 | outw(0xf2, base); |
| 1807 | outw(0x800, base); |
| 1808 | outw(0x0, base); |
| 1809 | outw(0x0, base); |
| 1810 | InterruptTheCard(base); |
| 1811 | outw(0x0, base + 0x4); /* for ISI4608 cards */ |
| 1812 | |
| 1813 | /* XXX: should we test it by reading it back and comparing with original like |
| 1814 | * in load firmware package? */ |
| 1815 | for (frame = (struct stframe*)fw->data; |
| 1816 | frame < (struct stframe*)(fw->data + fw->size); |
| 1817 | frame++) { |
| 1818 | if (WaitTillCardIsFree(base)) |
| 1819 | goto errrelfw; |
| 1820 | |
| 1821 | outw(0xf1, base); /* start download sequence */ |
| 1822 | outw(0x00, base); |
| 1823 | outw(frame->addr, base); /* lsb of address */ |
| 1824 | |
| 1825 | word_count = (frame->count >> 1) + frame->count % 2; |
| 1826 | outw(word_count + 1, base); |
| 1827 | InterruptTheCard(base); |
| 1828 | |
| 1829 | udelay(50); /* 0xf */ |
| 1830 | |
| 1831 | if (WaitTillCardIsFree(base)) |
| 1832 | goto errrelfw; |
| 1833 | |
| 1834 | if ((status = inw(base + 0x4)) != 0) { |
| 1835 | dev_warn(&pdev->dev, "Card%d rejected verify header:\n" |
| 1836 | "Address:0x%x\nCount:0x%x\nStatus: 0x%x\n", |
| 1837 | index + 1, frame->addr, frame->count, status); |
| 1838 | goto errrelfw; |
| 1839 | } |
| 1840 | |
| 1841 | data = kmalloc(word_count * 2, GFP_KERNEL); |
| 1842 | inw(base); |
| 1843 | insw(base, data, word_count); |
| 1844 | InterruptTheCard(base); |
| 1845 | |
| 1846 | for (a = 0; a < frame->count; a++) |
| 1847 | if (data[a] != frame->data[a]) { |
| 1848 | kfree(data); |
| 1849 | dev_err(&pdev->dev, "Card%d, firmware upload " |
| 1850 | "failed\n", index + 1); |
| 1851 | goto errrelfw; |
| 1852 | } |
| 1853 | kfree(data); |
| 1854 | |
| 1855 | udelay(50); /* 0xf */ |
| 1856 | |
| 1857 | if (WaitTillCardIsFree(base)) |
| 1858 | goto errrelfw; |
| 1859 | |
| 1860 | if ((status = inw(base + 0x4)) != 0) { |
| 1861 | dev_err(&pdev->dev, "Card%d verify got out of sync. " |
| 1862 | "Card Status:0x%x\n", index + 1, status); |
| 1863 | goto errrelfw; |
| 1864 | } |
| 1865 | } |
| 1866 | |
| 1867 | board->status |= FIRMWARE_LOADED; |
| 1868 | retval = 0; |
| 1869 | |
| 1870 | errrelfw: |
| 1871 | release_firmware(fw); |
| 1872 | end: |
| 1873 | return retval; |
| 1874 | } |
| 1875 | |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1876 | /* |
| 1877 | * Insmod can set static symbols so keep these static |
| 1878 | */ |
| 1879 | static int io[4]; |
| 1880 | static int irq[4]; |
| 1881 | static int card; |
| 1882 | |
| 1883 | static int __devinit isicom_probe(struct pci_dev *pdev, |
| 1884 | const struct pci_device_id *ent) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1885 | { |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1886 | unsigned int ioaddr, signature, index; |
| 1887 | int retval = -EPERM; |
| 1888 | u8 pciirq; |
| 1889 | struct isi_board *board = NULL; |
| 1890 | |
| 1891 | if (card >= BOARD_COUNT) |
| 1892 | goto err; |
| 1893 | |
| 1894 | ioaddr = pci_resource_start(pdev, 3); |
| 1895 | /* i.e at offset 0x1c in the PCI configuration register space. */ |
| 1896 | pciirq = pdev->irq; |
| 1897 | dev_info(&pdev->dev, "ISI PCI Card(Device ID 0x%x)\n", ent->device); |
| 1898 | |
| 1899 | /* allot the first empty slot in the array */ |
| 1900 | for (index = 0; index < BOARD_COUNT; index++) |
| 1901 | if (isi_card[index].base == 0) { |
| 1902 | board = &isi_card[index]; |
| 1903 | break; |
| 1904 | } |
| 1905 | |
| 1906 | board->base = ioaddr; |
| 1907 | board->irq = pciirq; |
| 1908 | board->isa = NO; |
| 1909 | card++; |
| 1910 | |
| 1911 | pci_set_drvdata(pdev, board); |
| 1912 | |
| 1913 | retval = isicom_register_ioregion(pdev, index); |
| 1914 | if (retval < 0) |
| 1915 | goto err; |
| 1916 | |
| 1917 | retval = isicom_register_isr(pdev, index); |
| 1918 | if (retval < 0) |
| 1919 | goto errunrr; |
| 1920 | |
| 1921 | retval = reset_card(pdev, index, &signature); |
| 1922 | if (retval < 0) |
| 1923 | goto errunri; |
| 1924 | |
Jiri Slaby | e65c1db | 2006-01-09 20:54:25 -0800 | [diff] [blame] | 1925 | retval = load_firmware(pdev, index, signature); |
| 1926 | if (retval < 0) |
| 1927 | goto errunri; |
| 1928 | |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1929 | return 0; |
| 1930 | |
| 1931 | errunri: |
| 1932 | free_irq(board->irq, board); |
| 1933 | errunrr: |
| 1934 | isicom_unregister_ioregion(pdev); |
| 1935 | err: |
| 1936 | board->base = 0; |
| 1937 | return retval; |
| 1938 | } |
| 1939 | |
| 1940 | static void __devexit isicom_remove(struct pci_dev *pdev) |
| 1941 | { |
| 1942 | struct isi_board *board = pci_get_drvdata(pdev); |
| 1943 | |
| 1944 | free_irq(board->irq, board); |
| 1945 | isicom_unregister_ioregion(pdev); |
| 1946 | } |
| 1947 | |
| 1948 | static int __devinit isicom_setup(void) |
| 1949 | { |
| 1950 | int retval, idx, channel; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1951 | struct isi_port *port; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1952 | |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1953 | card = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1954 | memset(isi_ports, 0, sizeof(isi_ports)); |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1955 | |
| 1956 | for(idx = 0; idx < BOARD_COUNT; idx++) { |
| 1957 | port = &isi_ports[idx * 16]; |
| 1958 | isi_card[idx].ports = port; |
| 1959 | spin_lock_init(&isi_card[idx].card_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1960 | for (channel = 0; channel < 16; channel++, port++) { |
| 1961 | port->magic = ISICOM_MAGIC; |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1962 | port->card = &isi_card[idx]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1963 | port->channel = channel; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1964 | port->close_delay = 50 * HZ/100; |
| 1965 | port->closing_wait = 3000 * HZ/100; |
| 1966 | INIT_WORK(&port->hangup_tq, do_isicom_hangup, port); |
| 1967 | INIT_WORK(&port->bh_tqueue, isicom_bottomhalf, port); |
| 1968 | port->status = 0; |
| 1969 | init_waitqueue_head(&port->open_wait); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1970 | init_waitqueue_head(&port->close_wait); |
| 1971 | /* . . . */ |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1972 | } |
| 1973 | isi_card[idx].base = 0; |
| 1974 | isi_card[idx].irq = 0; |
| 1975 | |
| 1976 | if (!io[idx]) |
| 1977 | continue; |
| 1978 | |
| 1979 | if (irq[idx] == 2 || irq[idx] == 3 || irq[idx] == 4 || |
| 1980 | irq[idx] == 5 || irq[idx] == 7 || |
| 1981 | irq[idx] == 10 || irq[idx] == 11 || |
| 1982 | irq[idx] == 12 || irq[idx] == 15) { |
| 1983 | printk(KERN_ERR "ISICOM: ISA not supported yet.\n"); |
| 1984 | retval = -EINVAL; |
| 1985 | goto error; |
| 1986 | } else |
| 1987 | printk(KERN_ERR "ISICOM: Irq %d unsupported. " |
| 1988 | "Disabling Card%d...\n", irq[idx], idx + 1); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1989 | } |
| 1990 | |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1991 | retval = isicom_register_tty_driver(); |
| 1992 | if (retval < 0) |
| 1993 | goto error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1994 | |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 1995 | retval = pci_register_driver(&isicom_driver); |
| 1996 | if (retval < 0) { |
| 1997 | printk(KERN_ERR "ISICOM: Unable to register pci driver.\n"); |
| 1998 | goto errtty; |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 1999 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2000 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2001 | init_timer(&tx); |
| 2002 | tx.expires = jiffies + 1; |
| 2003 | tx.data = 0; |
| 2004 | tx.function = isicom_tx; |
| 2005 | re_schedule = 1; |
| 2006 | add_timer(&tx); |
Jiri Slaby | d8d16e4 | 2006-01-09 20:54:21 -0800 | [diff] [blame] | 2007 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2008 | return 0; |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 2009 | errtty: |
| 2010 | isicom_unregister_tty_driver(); |
| 2011 | error: |
| 2012 | return retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2013 | } |
| 2014 | |
| 2015 | static void __exit isicom_exit(void) |
| 2016 | { |
Jiri Slaby | aaa246e | 2006-01-09 20:54:23 -0800 | [diff] [blame] | 2017 | unsigned int index = 0; |
| 2018 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2019 | re_schedule = 0; |
Jiri Slaby | aaa246e | 2006-01-09 20:54:23 -0800 | [diff] [blame] | 2020 | |
| 2021 | while (re_schedule != 2 && index++ < 100) |
| 2022 | msleep(10); |
| 2023 | |
Jiri Slaby | 9ac0948 | 2006-01-09 20:54:24 -0800 | [diff] [blame] | 2024 | pci_unregister_driver(&isicom_driver); |
Jiri Slaby | aaa246e | 2006-01-09 20:54:23 -0800 | [diff] [blame] | 2025 | isicom_unregister_tty_driver(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2026 | } |
| 2027 | |
| 2028 | module_init(isicom_setup); |
| 2029 | module_exit(isicom_exit); |
Jiri Slaby | aaa246e | 2006-01-09 20:54:23 -0800 | [diff] [blame] | 2030 | |
| 2031 | MODULE_AUTHOR("MultiTech"); |
| 2032 | MODULE_DESCRIPTION("Driver for the ISI series of cards by MultiTech"); |
| 2033 | MODULE_LICENSE("GPL"); |
| 2034 | module_param_array(io, int, NULL, 0); |
| 2035 | MODULE_PARM_DESC(io, "I/O ports for the cards"); |
| 2036 | module_param_array(irq, int, NULL, 0); |
| 2037 | MODULE_PARM_DESC(irq, "Interrupts for the cards"); |